In 3D model generation, Meshy ranks #1 and Retro Diffusion ranks #5. Highest-ranked of these tools on 3D Arena's blind human-preference leaderboard: Meshy 6 is #3 and Meshy 7 is #5 of 24 image-to-3D models. Free-plan output can be used commercially if you credit Meshy (CC BY 4.0). 3D Arena leaderboard
Commercial use: both commercial use allowed (Meshy terms; Retro Diffusion terms).
Free plan: Meshy: free plan (100 monthly credits; outputs CC BY 4.0) pricing. Retro Diffusion: free trial or credits only (Free starting balance for new accounts) pricing.
Shipping free-plan output in a paid game: both allow it, per their published terms.
API and MCP: both: public API, official MCP server.
Engine integrations stated by the vendor: Meshy: Godot, Unity, Unreal, Blender, Roblox. Retro Diffusion: Godot, Unity, Unreal.
Quick text- or image-to-3D props with texturing and rigging
Pay-per-image pixel-art sprites and tiles
What it does
Text-to-3D and image-to-3D model generation with AI texturing; paid plans add animation with 600+ motions. DCC bridge listed for Roblox, Blender, Godot, Unity and Unreal.
Pixel-art-specific image models for sprites, tiles, tilesets and animations, plus low-poly 3D model generation with export for Godot, Unity and Unreal. Also sells an Aseprite extension.
Verdict
For quick text- or image-to-3D props with Godot/Unity/Unreal bridges; free output is CC BY 4.0, so you must credit Meshy unless you pay.
For pixel-art devs who want pay-per-image pricing with no subscription; the site says all output is yours for commercial use.
Tasks●
3D model generation, Textures & materials, Rigging, animation & mocap
Concept art & 2D assets, 3D model generation
Engines●
Godot, Unity, Unreal, Blender, Roblox
Godot, Unity, Unreal
Free plan●
Free plan 100 monthly credits; outputs CC BY 4.0
Free trial or credits only Free starting balance for new accounts
Pricing
Free: 100 monthly credits. Pro US$20/month (1,000 credits). Higher tiers listed at US$40 and US$70 (Studio, team) per month; Enterprise custom. source
Pay per generation from a prepaid balance: images from US$0.03 (RD Fast), US$0.06, US$0.18 (RD Pro); animations from US$0.07 per clip. New accounts get a free starting balance. source
Commercial use allowed Paid plans: you own the assets you create. Free plan: assets licensed to you under CC BY 4.0 (commercial use with attribution to Meshy). source
Commercial use allowed Official FAQ: "Everything you generate is yours, for personal and commercial projects alike." source
Rows marked ● differ between the two tools. Licence badges: green = commercial use allowed (including any free plan or trial), amber = paid plans only, restricted, or allowed but with no free plan, red = not allowed, grey = not stated by vendor or not applicable. Read the vendor's current terms before you ship. Some links earn us a commission. It never changes our listings.